/* ==========================================================================
   CSS Variables & Design System
   ========================================================================== */
:root {
  /* Colors */
  --primary: #FF6B00;
  --primary-light: #FF8C00;
  --primary-dark: #E55A00;
  --bg-dark: #0f172a;
  --bg-darker: #0a0f1e;
  --surface: #1e293b;
  --surface-light: #334155;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --success: #22c55e;
  --error: #ef4444;
  --warning: #f59e0b;
  --white: #ffffff;
  
  /* Shadows & Glass */
  --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 10px 15px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 20px 25px rgba(0, 0, 0, 0.25);
  --glass-bg: rgba(30, 41, 59, 0.7);
  --glass-border: rgba(255, 255, 255, 0.1);
  
  /* Typography */
  --font-family: 'Inter', sans-serif;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-pill: 50px;
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-darker);
  color: var(--text-primary);
  font-family: var(--font-family);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

::selection {
  background-color: var(--primary);
  color: var(--white);
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ==========================================================================
   Typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); font-weight: 800; }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.25rem; }

.text-gradient {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

.text-muted {
  color: var(--text-secondary);
}

/* ==========================================================================
   Layout & Grid System
   ========================================================================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 80px 0;
  position: relative;
}

.grid {
  display: grid;
  gap: 2rem;
}

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

/* ==========================================================================
   Navbar
   ========================================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 50;
  padding: 1rem 0;
  background-color: rgba(10, 15, 30, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
  transition: all 0.3s ease;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.navbar-logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--white);
  z-index: 60;
}

.navbar-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.navbar-links a {
  color: var(--text-secondary);
  font-weight: 500;
  transition: color 0.3s ease;
}

.navbar-links a:hover,
.navbar-links a.active {
  color: var(--primary);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.5rem;
  cursor: pointer;
  z-index: 60;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  text-align: center;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  box-shadow: 0 4px 15px rgba(255, 107, 0, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 107, 0, 0.4);
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
}

.btn-secondary:hover {
  background: rgba(255, 107, 0, 0.1);
}

.btn-login {
  border-radius: var(--radius-pill);
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--primary);
  color: var(--primary);
  font-size: 0.875rem;
}

.btn-login:hover {
  background: var(--primary);
  color: var(--white);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

.btn-block {
  width: 100%;
}

/* ==========================================================================
   Cards & Glassmorphism
   ========================================================================== */
.card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Pricing Cards */
.pricing-card {
  text-align: center;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.pricing-card__duration {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.pricing-card__price-wrapper {
  margin-bottom: 2rem;
}

.pricing-card__price {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary);
}

.pricing-card__currency {
  font-size: 1rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-left: 0.25rem;
}

.pricing-card--popular {
  border: 1px solid var(--primary);
  position: relative;
  transform: scale(1.05);
  box-shadow: 0 0 30px rgba(255, 107, 0, 0.15);
  background: linear-gradient(180deg, rgba(30, 41, 59, 0.9) 0%, rgba(30, 41, 59, 0.7) 100%);
}

.pricing-card--popular::before {
  content: 'Populaire';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -50%);
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  padding: 0.25rem 1rem;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.pricing-card--popular:hover {
  transform: scale(1.05) translateY(-4px);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 80px;
  background: radial-gradient(circle at top right, rgba(255, 107, 0, 0.1) 0%, var(--bg-dark) 40%, var(--bg-darker) 100%);
  overflow: hidden;
}

.hero-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 10;
}

.hero p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Background floating elements */
.bg-shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  z-index: 1;
  opacity: 0.4;
}

.bg-shape-1 {
  width: 300px;
  height: 300px;
  background: var(--primary);
  top: -100px;
  right: -100px;
  animation: float 10s infinite ease-in-out;
}

.bg-shape-2 {
  width: 400px;
  height: 400px;
  background: var(--surface-light);
  bottom: -150px;
  left: -100px;
  animation: float 12s infinite ease-in-out reverse;
}

/* Promo Banner */
.promo-banner {
  background: linear-gradient(90deg, rgba(15,23,42,1) 0%, rgba(30,41,59,1) 50%, rgba(15,23,42,1) 100%);
  border-top: 1px solid var(--glass-border);
  border-bottom: 1px solid var(--glass-border);
  padding: 1rem 0;
  text-align: center;
}

.promo-text {
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  animation: pulse 2s infinite;
}

/* ==========================================================================
   Forms Elements
   ========================================================================== */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  background-color: var(--surface);
  border: 1px solid var(--surface-light);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1rem;
  transition: all 0.3s ease;
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255, 107, 0, 0.2);
}

/* ==========================================================================
   Specific Sections & Components
   ========================================================================== */

/* Steps */
.steps-grid {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.step-card {
  text-align: center;
  position: relative;
}

.step-number {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
  margin: 0 auto 1.5rem;
  box-shadow: 0 4px 15px rgba(255, 107, 0, 0.3);
  position: relative;
  z-index: 2;
}

@media (min-width: 768px) {
  .step-card:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 30px;
    left: 50%;
    width: 100%;
    height: 2px;
    background: var(--surface-light);
    z-index: 1;
  }
}

.step-title {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.step-desc {
  color: var(--text-secondary);
}

/* Features/Partenaire Grid */
.features-grid {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  display: inline-block;
}

/* Pricing Grid */
.pricing-grid {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  align-items: center;
}

/* WiFi Signal Animation */
.wifi-container {
  display: flex;
  justify-content: center;
  margin-bottom: 2rem;
}

.wifi-signal {
  position: relative;
  width: 100px;
  height: 100px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  overflow: hidden;
}

.wifi-signal .arc {
  position: absolute;
  border: 4px solid transparent;
  border-top-color: var(--primary);
  border-radius: 50%;
  bottom: 0;
  transform-origin: bottom center;
  opacity: 0;
  animation: pulseWifi 2s infinite ease-out;
}

.wifi-signal .arc-1 {
  width: 20px;
  height: 20px;
  bottom: 10px;
  background-color: var(--primary);
  border-color: var(--primary);
  animation-delay: 0s;
  opacity: 1;
}

.wifi-signal .arc-2 {
  width: 50px;
  height: 50px;
  animation-delay: 0.2s;
}

.wifi-signal .arc-3 {
  width: 80px;
  height: 80px;
  animation-delay: 0.4s;
}

.wifi-signal .arc-4 {
  width: 110px;
  height: 110px;
  animation-delay: 0.6s;
}

@keyframes pulseWifi {
  0% { opacity: 0; }
  50% { opacity: 1; }
  100% { opacity: 0; }
}

/* Footer */
.footer {
  background-color: var(--bg-darker);
  border-top: 1px solid var(--surface);
  padding: 4rem 0 2rem;
}

.footer-grid {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  margin-bottom: 3rem;
}

.footer-title {
  font-size: 1.125rem;
  margin-bottom: 1.5rem;
  color: var(--white);
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--text-secondary);
  transition: color 0.3s;
}

.footer-links a:hover {
  color: var(--primary);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--surface);
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* ==========================================================================
   Animations & Utilities
   ========================================================================== */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes float {
  0% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-20px) scale(1.05); }
  100% { transform: translateY(0) scale(1); }
}

@keyframes pulse {
  0% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.02); opacity: 0.8; }
  100% { transform: scale(1); opacity: 1; }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mt-5 { margin-top: 3rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-5 { margin-bottom: 3rem; }

.hidden { display: none !important; }
.w-full { width: 100%; }

/* ==========================================================================
   Media Queries
   ========================================================================== */
@media (max-width: 1024px) {
  .pricing-card--popular {
    transform: scale(1);
  }
  .pricing-card--popular:hover {
    transform: translateY(-4px);
  }
}

@media (max-width: 768px) {
  .section {
    padding: 60px 0;
  }
  
  .navbar-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--bg-darker);
    flex-direction: column;
    padding: 2rem;
    border-bottom: 1px solid var(--surface);
    box-shadow: var(--shadow-lg);
  }
  
  .navbar-links.active {
    display: flex;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .hero-buttons {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
  }
  
  .step-card:not(:last-child)::after {
    display: none;
  }
  
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }
}